High Pressure Liquid Gas Dewar — liquid cylinders for demanding pressure and flow
A high pressure liquid gas Dewar stores liquefied nitrogen, oxygen or argon in a pressure-rated inner vessel, so gas or liquid can be withdrawn at up to 22 or 35 bar.
REAL GAZ supplies these liquid cylinders with the correct valves, economiser circuits and safety devices for your pipeline.
REAL GAZ supplies these liquid cylinders with the correct valves, economiser circuits and safety devices for your pipeline.
Vessel design follows ISO 21029-1, EN 13458 and TPED principles, with relief valves tested to EN ISO 4126 practice.
Pressurised liquid cylinders are often called liquid Dewars or cryogenic liquid cylinders. A typical unit holds 160 to 240 litres of liquid and can deliver gas at working pressures such as 1.5, 16, 22 or 35 bar, depending on its relief setting. They can supply gas for days at moderate flow, and a built-in vaporiser or a separate ambient vaporiser handles higher draw rates. REAL GAZ helps you decide between gas withdrawal and liquid withdrawal ports, and recommends regulators, check valves and hoses rated for the chosen pressure and gas. Remember that a pressurised vessel must always travel upright, strapped to a suitable vehicle, and that its pressure gauge should be checked at every exchange. Never block or alter the safety valves.
🏭 Where Pressurised Liquid Dewars Are Used
- 🔥 Laser cutting — argon, nitrogen and oxygen are drawn at high pressure for assist gas on cutting heads;
- 🏭 Heat treatment — furnace atmospheres need a stable inert supply at elevated pressure;
- 🔬 Pressure testing — nitrogen from a liquid cylinder pressurises components during leak and burst checks;
- 🍺 Beverage dispensing — nitrogen at controlled pressure produces creamy texture in cold-brew and stout lines.
🛡️ Pressure Safety Features
- primary and secondary relief valves protect the inner vessel;
- burst discs add a second layer of overpressure protection;
- pressure-building and economiser circuits maintain delivery pressure without waste.
💡 Why Choose REAL GAZ
- ✅ Strong flow — vaporising capacity supports continuous gas supply without freezing the regulator;
- 🧪 Pressure matching — vessel rating is chosen to suit your equipment, not simply the largest available;
- 🎯 Gas selection — dedicated fittings avoid cross-connections between oxygen, nitrogen and argon;
- 🔒 Compact storage — one liquid cylinder holds the gas of many conventional cylinders;
- 📄 Certificate of Analysis (CoA) — supplied with every order.
🔬 Quality Control & Safety
- multi-stage pressure and vacuum inspection;
- precision filling by weight and level;
- moisture & impurity analysis of the contents;
- leak testing and pressure integrity checks.
Vessels comply with ADR / UN transport rules and relevant EN/ISO standards, and must be secured upright during transport.
⚙️ Trusted Gas Solutions
Industrial users who need a high pressure liquid gas Dewar value reliability, and REAL GAZ delivers it through correct specification and scheduled exchange. We supply workshops, breweries and laboratories in Azerbaijan, Turkey, Georgia, Uzbekistan and the USA.
REAL GAZ — pressure, flow and safety in balance.